Through January, 522 U.S. service members have died since the beginning of military operations in Iraq, according to the Department of Defense. Of those, 363 died as a result of hostile action and 159 died of non-hostile causes, the department said.

Through January, 522 U.S. service members have died since the beginning of military operations in Iraq, according to the Department of Defense. Of those, 363 died as a result of hostile action and 159 died of non-hostile causes, the department said.